After a biodiesel cold test was performed last night, it was determined that it is still safe to use a fuel blend of up to B50. If you aren't certain that you will use all the fuel in your tank before temperatures drop, we recommend a blend of B20.
The waste vegetable oil cold test results lead us to recommend using a blend of up to 20% WVO (we'll call it V20) in single-tank systems. Last night's low temperature was about 18 degrees F.
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